It goes without saying that the world has largely moved on from the clamshell form factor even though it used to be all the range back in the day, but not anymore. Nevertheless there are some companies that are still making these phones, LG recently released one, and today Samsung is out with a new flip phone that's called the Master Dual. Its not a smartphone so don't expect Android, rather its a cheap feature phone in the clamshell form factor.
The Master Dual has two displays like most phones of this form factor. Internal display measures in at 3-inches whereas the external comes in at 2.2-inches. Feature set is limited but there is microUSB, FM Radio, GPS onboard alongside a 3 megapixel rear and 1.3 megapixel front camera. The Master Dual also has a feature that can notify preset contacts when it is not used for a certain amount of time.
The Samsung Master Dual is only available in South Korea right now through SKT for 300,300 won.